package com.example.lotterysystem;

import org.springframework.web.servlet.HandlerInterceptor;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashMap;
import java.util.StringTokenizer;

public class main {
    public static void main(String[] args) {
        HashMap<String , String> map = new HashMap<>();
        map.put(null, "1");
        ArrayList<Integer> list = new ArrayList<>();
//        list.
        System.out.println(map.get(null));
    }
}
